DEMO9S12XEP100 Freescale Semiconductor, DEMO9S12XEP100 Datasheet - Page 942

• Manufacturer Part Number: DEMO9S12XEP100
• Description: BOARD DEMO FOR MC9S12XEP100
• Manufacturer: Freescale Semiconductor
• Type: MCUr

Specifications of DEMO9S12XEP100

• Contents: Board, Cables, CD
• Processor To Be Evaluated: MC9S12XEP100
• Data Bus Width: 16 bit
• Interface Type: RS-232
• Silicon Manufacturer: Freescale
• Core Architecture: S12
• Core Sub-architecture: S12
• Silicon Core Number: MC9S12
• Silicon Family Name: S12XE
• Rohs Compliant: Yes
• For Use With/related Products: MC9S12XEP100
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Chapter 25 256 KByte Flash Module (S12XFTM256K2V1)
Upon clearing CCIF to launch the Full Partition D-Flash command, the following actions are taken to
define a partition within the D-Flash block for direct access (DFPART) and a partition within the buffer
RAM for EEE use (ERPART):
The D-Flash user partition will start at global address 0x10_0000. The buffer RAM EEE partition will end
at global address 0x13_FFFF. After the Full Partition D-Flash operation has completed, the CCIF flag will
set.
Running the Full Partition D-Flash command a second time will result in the previous partition values and
the entire D-Flash memory being erased. The data value written corresponds to the number of 256 byte
sectors allocated for either direct D-Flash access (DFPART) or buffer RAM EEE access (ERPART).
942
•
•
•
•
•
•
Validate the DFPART and ERPART values provided:
— DFPART <= 128 (maximum number of 256 byte sectors in D-Flash block)
— ERPART <= 16 (maximum number of 256 byte sectors in buffer RAM)
— If ERPART > 0, 128 - DFPART >= 12 (minimum number of 256 byte sectors in the D-Flash
— If ERPART > 0, ((128-DFPART)/ERPART) >= 8 (minimum ratio of D-Flash EEE space to
Erase the D-Flash block and the EEE nonvolatile information register
Program DFPART to the EEE nonvolatile information register at global address 0x12_0000 (see
Table
Program a duplicate DFPART to the EEE nonvolatile information register at global address
0x12_0002 (see
Program ERPART to the EEE nonvolatile information register at global address 0x12_0004 (see
Table
Program a duplicate ERPART to the EEE nonvolatile information register at global address
0x12_0006 (see
block required to support EEE)
buffer RAM EEE space to support EEE)
25-7)
25-7)
CCOBIX[2:0]
Table 25-63. Full Partition D-Flash Command FCCOB Requirements
000
001
010
Table
Table
25-7)
25-7)
Number of 256 byte sectors for the D-Flash user partition (DFPART)
Number of 256 byte sectors for buffer RAM EEE partition (ERPART)
MC9S12XE-Family Reference Manual , Rev. 1.23
0x0F
FCCOB Parameters
Not required
Freescale Semiconductor